Call “HostDatastoreSystem.CreateNasDatastore” for object “datastoreSystem-663108” on vCenter Server failed.
NFS mount failed: The mount request was denied by the NFS server. Check that the export exists and that the client is permitted to mount it.
An unknown error has occurred.

vserver services name-service netgroup status enables you to verify that netgroup definitions are consistent across all nodes that back a SVM into which netgroup definitions have been loaded.

The command displays the following information:

SVM name

Node name

Load time for netgroup definitions

Hash value of the netgroup definitions

Node13 and node14 contained no load time or hash value, as this is a manual step, and doesn’t happen automatically when a node is added. No worries. To resolve, I reloaded the netgroup file onto the SVMs:

This loaded the netgroup file onto node13 and node14, which took about 5 minutes to build the netgroup.byhost map. (I tried mounting on vSphere host immediately after netgroup load, and got the same error message. Waited 5 minutes, and it mounted fine.)